Question

这很奇怪，我在dojo.addOnLoad（function {...}）中调用dijit.byId（），它返回undefined。为了检查id是否存在，我同时调用dojo.byId（），它返回一些对象。所以我猜这个组件不是dijit组件？这是整个代码：请帮助我，谢谢你的建议！

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title></title>

<!-- Dojo/Diji definations -->
<link href='../dojoroot/dijit/themes/tundra/tundra.css' type='text/css' rel='stylesheet'/>
<link href='../dojoroot/dojo/resources/dojo.css' type='text/css' rel='stylesheet'/>

<script type="text/javascript" src="../dojoroot/dojo/dojo.js" djConfig="parseOnLoad: true"></script>


<!-- Main scripts -->

<script type="text/javascript">
    dojo.addOnLoad(function()
    {
        // Include library
        dojo.require("dijit.layout.BorderContainer");
        dojo.require("dijit.layout.TabContainer");
        dojo.require("dijit.layout.ContentPane");

        // add the select child event to the tab panel
        alert(dijit.byId("contentTabPanel"));  // return no defined
        alert(dojo.byId("contentTabPanel")); // return an object

    });
</script>
</head>

<body class="tundra">
<div dojoType="dijit.layout.BorderContainer" style="width: 100%; height: 100%;">
    <!-- Content Tab Panel -->
    <div id="contentTabPanel" dojoType="dijit.layout.TabContainer" region="center">
        <!-- Tab UserGroup -->
        <div dojoType="dijit.layout.ContentPane" title="UserGroup">
        </div>
    </div>
</div>
</body>
</html>

OMFG !!!!!我知道原因!!!!!我只花了5个小时来处理这个STUPID错误：

我必须写

    // Include library
    dojo.require("dijit.layout.BorderContainer");
    dojo.require("dijit.layout.TabContainer");
    dojo.require("dijit.layout.ContentPane");

在dojo.addOnLoad之外的

（function（）{!!!

dijit.byId返回undefined

0 个答案: